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(No Model.) 3 Sheets-Sheet 1.

D. & N. D. GEISER MACHINE FOR THRASHING AND GLEANING GRAIN;

NO. 266,688. Patented Oct. 31, 1882.

(No Model.)

3 Sheets-Sheet 3.

D. 8.: N. D. GEISER MACHINE FOR THRASHING ANDGLEANING GRAIN.

Patented Oct. 31, 1882.

DANIEL GEISER AND NORRIS D. GEISER, OF \VAYNESBOROUGII, PA.

MACHINE FOR TH RASHING AND CLEANING GRAIN.

SPECIFICATION forming part of Letters Patent No. 266,688, dated October31, 1882.

Application filed June 10, 1882.

To all whom it may concern:

Be it known that we, DANIEL GEISER and NORRIS D. GEISER, citizens of theUnited States ot'America, residing at Vaynesborough, in the county ofFranklin and State of Pen nsylvania, have invented certain new anduseful Improvements in Machines for Thrashing and UleaningGrain; and wedo hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to letters or figures of referencemarked thereon, which form a part of this specification, and in whichFigure 1 is a side elevation of the machine; Fig. 2, a plan view of thesame with the thrashing-cylinderomitted; Fig. 3, alongitudinal verticalsection on the line m of Fig. 2, and Fig. 4. an enlarged verticalsection of the springcushioned bolster seen in Fig. 3 at H. Fig.5 is aside view of one of the rakes.

This invention relates to devices which form part of a thrashing-machineand effect a portion of the separation of the grain from chaff, dust,and other substances; and it consists in several novel devices andcombinations and arnngements of mechanism, as will be hereinafter morefully described, and set forth in the claims.

In the accompanyingdrawings, A represents the section which contains thethrashing mechanism for preparing the material to enter upon the grates,which are arraijiged in sections B C. These parts are arranged as inordinary improved thrashirig-machines, and are so well known as torequire no description, as they form no part of our invention.

In Fig. 3 are shown the various parts of our improved grain-separator.From this figure the section A of Fig. 1 is absent, the sections B and 0only being shown.

B is the apron, and B the first grate, extending at considerable of anangle above the inner end of apron B. This elevation of the first grategives the grain more grate-surface through which to be separated, andmakes a long offset to the lower grate, B The bars I) Z) Z), upon whichthe grate B rests, are made wide and extend down a suitable distance toform a continuous head to receive the grain (No model.)

| thrown forward by the cylinder and deflect it downward to the fan-shoeD and grate II.

Above the grates are the rakes E E E, &c., of which there may be as manyas may be necessary. Seven are shown in the plan, Fig. 2. These rakesare operated by two cranleshat'ts, F and F, the crank-pins on each shaftbeing arranged so that they correspond in movement each with the otherand the cranks are placed around the center of rotation to give therakes different times of reciprocation, so that when one is moving thestraw forward those 011 each side of it are elevated and movingbackward. In addition to the teeth 0, which are of uniform length, andwhich, during their forward movement, pass just above the cross-bars ofthe grates, so as to clear the bars and feed the straw, each rakeisprovided with several teeth, a, made long enough to pass some distancebelow the wires of the grates between the bars, especially over thefirst grate, B where the straw first rises above the apron B, and alsoover the grate B. These long teeth during their backward movement breakup and seatter the bunches that frequently form and carry forward thegrain. Over the apron 13 each rake is provided with a series of teeth,m, of sufticient length to just clear the apron upon the forwardmovement of the rake.

At 0 the grate B has a short ramp, 0, to grate U, and at the end ofgrate 0 there is another ramp, 0, beyond which the straw is forced outof the machine and conveyed away. One of the special features of ourinvention is the rake-bars E, supported and operated by twocoincidentlymoving crank-shafts provided with extension-bars E, attachedto the ends of the rake-bars E. The object of this construction is tohave a uniform standard of rake-bars and crank-shafts for all sizes ofmachines, and to adapt the rake to the various sizes of machines by aseries of sizes of extension-bars E. This will avoid the necessity forchanging the crank-points, and consequently other parts of the machine,and permit of uniformity throughout a series of different-sizedmachines.

The grates are made in sets attached to a bar, with the screen-wires I)all lapping forward over the bar of the preceding set, as seen insection, Fig. 3 of the drawings, the bars being secured at their ends torails attached to the sides of IOC the machine. Near the front end aboard, G, extends across the machine, in front of the crank-shaft F,between the sides of section B, towhichitissecured.Thisboard,ordefiector, as it may be termed, has strips 9 dependent fromit, passing at a suitable angle forward, between the bars E, andextending downward the requireddistancefior catching and deflectingdownward any grain thrown upward by the cylinder. Sufficient room mustbe left for the straw to pass upon the apron under the dependent strips.

Below the grates B 0 there is a shoe, H, hung upon hangers h h, and nearthe middle on each side are bolstersH,ot' a peculiar construction, asshown in Fig. 4 of the drawings, upon which the shoe is supported. Thesebolsters are fastened to the bottom of shoe H on each side, about midwayof the length of the shoe, by means of screw-bolts h h passing throughholes h h in the bolster. This bolster is preferably made of metal, andhollowed, as shown, for the reception of a socket-piece, 2', having inits beveled face a socket, t". On each side of the socket-piece 2' anelastic spring, forming cushions i 11, is introduced between thesocket-piece and the end of the bolster, the whole being covered by acap, h, in which is a slot, 6, for the crank-arm I of a rocking shaft,1, which is placed beneath and properly supported in the side pieces ofthe machine. An extension-arm, I, is connected to a bar, J, the end ofwhich is attached to one of the rakes K, that are operated by thecrank-shaft F", on the end of which, on the outside of the frame, is apulley,f, which receivesits. motion by a band from the pulleyf, aboveand forward of it, on the end of crank F, which receives its motion fromcrank F by the connection of the rakes E.

On the outer end of crank F is a pulley,f, which is connected by a bandto the pulley r on the shaft r of the fan It. The motion which iscommunicated to the under crank-shaft, F, is transmitted by theconnecting-bar J to the rocking shaft 1, and by the crank-arm I areciprocating motion is given to the shoe H by means of the bolster H.At the same time the jar is greatly relieved by the springs 2' t' withinthe bolster.

H is a grate placed below the end of the shoe H and immediately aboveand back of the fan-tunnel It, so that as the grain and foreign materialdrop upon the grate the blast carries off thelighter material and thegrain passes through to any suitable receptacle that may be provided forit.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent 1. In combination with crank-shafts F F", arake for grain-separators, consisting essentially of an angular rakeextending from one crankshaft to another, said rake being constructedwith suitable bearings for the crank-shafts, and having a sectionsecured to the end for extending the rake to any desired length forvarying sizes of machines, so as to avoid the necessity for changing thecrank-points, substantially as shown and described.

2. The combination of the main drivingshaft F, rakes E, second sh aft,F, pulleysf and f, shaft F, rod J, arms I and I, bolster H, and shoe H,whereby the shoe is reciprocated, substantially as shown and described.

3. In combination with a separating grate, one or more rakes andsuitable mechanism for reciprocating them, said rakes being constructedwith one or more teeth made longer than the regular teeth to pass belowthe wires of the grate and to break up and distribute the straw upon thebackward movement of the rake, substantially as described.

4. The hollow bolster H, having the socketpiece i and springs i fittingin said hollow bolster, the socket-piece 2', having a socket in itsface, said socket-piece and springs being covered and held inv place bya cap screwed or bolted onto said bolster over the hollow opening, saidcap having a slot in its face for the admission of the end of acrank-arm t0 the socket, substantially as shown and described.

5. The bars b, supporting the grate nearest the thrashing-cylinder,arranged one above the other to deflect the grain thrown from thecylinder directly on the fan-shoe and lower grates, in combination withthe grate B thrashingcylinder, fan-shoe, lower grate, and rakes E,substantially as shown and described.

In testimony whereof we affiX our signatures in presence of twowitnesses.

DANIEL GEISER. NORRIS D. GEISER.

WVitnesses:

l). M. G001), Jr., D. 0. UNGER.

